The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 24, 2024
Filed:
Dec. 24, 2019
Sanyo Electric Co., Ltd., Daito, JP;
Kazuaki Tamura, Hyogo, JP;
Yoshifumi Magari, Hyogo, JP;
Atsutoshi Ako, Hyogo, JP;
Akira Nishida, Hyogo, JP;
Kentaro Tsukamoto, Hyogo, JP;
Tomoyuki Yamada, Hyogo, JP;
SANYO Electric Co., Ltd., Osaka, JP;
Abstract
A positive electrode plate that has a positive electrode active material layer formed on a positive electrode core, wherein the positive electrode core has, on an edge side, a thick portion which has a thickness that is greater than the thickness of a portion of the positive electrode core that has the positive electrode active material layer formed on both sides, and the positive electrode plate has a first region that extends into the thick portion from the portion of the positive electrode core that has the positive electrode active material layer formed on both sides and a second region that is positioned outside the first region in the thick portion. The average maximum diameter of the metal crystal grains that compose the first region is smaller than those of the second region.